/* SPDX-License-Identifier: BSD-2-Clause */

/**
 * @file
 *
 * @ingroup RTEMSImplClassic
 *
 * @brief This source file contains the default implementation of
 *   rtems_get_target_hash().
 */

/*
 * Copyright (C) 2021 embedded brains GmbH (http://www.embedded-brains.de)
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */

#include <rtems/config.h>
#include <rtems/counter.h>
#include <rtems/sysinit.h>
#include <rtems/score/hash.h>

static Hash_Control bsp_target_hash;

static void bsp_target_hash_initialize( void )
{
  Hash_Context context;
  uint32_t     frequency;

  _Hash_Initialize( &context );

  frequency = rtems_counter_frequency();
  _Hash_Add_data( &context, &frequency, sizeof( frequency ) );

  _Hash_Finalize( &context, &bsp_target_hash );
}

const char *rtems_get_target_hash( void )
{
  return _Hash_Get_string( &bsp_target_hash );
}

RTEMS_SYSINIT_ITEM(
  bsp_target_hash_initialize,
  RTEMS_SYSINIT_TARGET_HASH,
  RTEMS_SYSINIT_ORDER_SECOND
);
